Article ID Journal Published Year Pages File Type
1334694 Polyhedron 2012 7 Pages PDF
Abstract

The synthesis of core–shell particles of TiO2, SiO2 and basic Al2O3 are described based on surface modification of the particles and a solution reaction involving l-lactide and a catalyst such as tin octanoate or 4-dimethylaminopyridine. Surface modification involves treating the particles with titanium isopropoxide, lactic acid or glycolic acid. A similar approach taken with sand, Fe3O4, Co3O4, BaTiO3, montmorillonite clay or starch yielded varying results. Polymer coatings were characterized by Fourier-transform infrared spectrometry, solid-state 13C NMR and mass balance.

Graphical abstractSyntheses are described for the growth of polylactide on various oxide particles.Figure optionsDownload full-size imageDownload as PowerPoint slideHighlights► Polylactide was grown from TiO2, SiO2 and Al2O3 nanoparticles. ► An initiator such as lactic acid was used on the surface to initiate ring-opening. ► The method used is a one-pot, cost-efficient reaction. ► Particles with up to 66% polymer by mass were obtained. ► These particles could have applications in drug delivery.

Related Topics
Physical Sciences and Engineering Chemistry Inorganic Chemistry
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